If an enemy killed its allies with friendly fire would the heroes get XP?

@ChrisPerkinsDnD if a enemy caster killed its allies with friendly fire would the heroes get xp for those deaths?

— Wait…What? (@davoerlo) July 26, 2016

Only if the characters directly contributed (for example, by goading the enemy to cast the spell). #WOTCstaff https://t.co/i2FvLoHD0Q

— (((Chris Perkins))) (@ChrisPerkinsDnD) July 26, 2016